Insurance Liabilities - Components of Contractholder Funds (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Liabilities for investment contracts:
Liabilities for individual annuities	$ 13,457.5	$ 12,913.9
GICs	10,423.5	10,321.7
Funding agreements	8,640.6	7,729.5
Other investment contracts	1,596.7	1,652.2
Total liabilities for investment contracts	34,118.3	32,617.3
Universal life and other reserves	7,249.2	7,082.4
Contractholder funds	$ 41,367.5	$ 39,699.7

Contractholder funds include reserves for investment contracts and reserves for universal life insurance.

No definition available.

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- Definition

Carrying amount of liabilities as of the balance sheet date pertaining to amounts received by the insurer for investment contracts not otherwise specified in the taxonomy.

+ References

No definition available.

+ Details

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- Definition

The amount of the liability as of the balance sheet date pertaining to amounts received by the insurer for funding agreements.

+ References

No definition available.

+ Details

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- Definition

The amount of the liability as of the balance sheet date pertaining to liabilities for individual annuities.

+ References

No definition available.

+ Details

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- Definition

The amount as of the balance sheet date pertaining to reserves for universal life and other reserves.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of liabilities as of the balance sheet date pertaining to amounts received by the insurer or reinsurer from the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99397363&loc=d3e9420-108338

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- References

No definition available.

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- Definition

The amount of the liability as of the balance sheet date pertaining to the guarantee given by the insurance entity to contract holders of a specified rate of return (a guaranteed yield) on their investments for a specified period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(14))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(13))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

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